diff --git a/README.md b/README.md
index 0e1734e..5abcd68 100644
--- a/README.md
+++ b/README.md
@@ -50,7 +50,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@v1
       - name: Update flake.lock
@@ -75,7 +75,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@v1
       - name: Update flake.lock
@@ -98,7 +98,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@v1
       - name: Update flake.lock
@@ -127,7 +127,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@v1
       - name: Update flake.lock
@@ -154,7 +154,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@v1
       - name: Update flake.lock
@@ -199,7 +199,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@v1
       - name: Update flake.lock
@@ -234,7 +234,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@v1
       - name: Update flake.lock
@@ -296,7 +296,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout repository
-        uses: actions/checkout@v2
+        uses: actions/checkout@v3
       - name: Install Nix
         uses: DeterminateSystems/nix-installer-action@v1
       - name: Update flake.lock